According to Article 11 of the Trademark Law, the following marks may not be registered as trademarks:
It only directly indicates the quality, main raw materials, functions, uses, weight, quantity and other characteristics of goods.
In other words, the actual subject of your trademark is Newton, because if you sell an apple, then the apple itself has shown its "main raw material", then the word Newton is actually under investigation. Newton was registered in Class 30.